wikimedia/mediawiki · Security
MediaWiki Cross-site Scripting (XSS) vulnerability
- GHSA ID
- GHSA-rj9p-8jxj-2ch4
- CVE ID
- CVE-2020-25812
- Severity
- medium
- Published
- Updated
- CVSS
- 6.1 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- CVSS v3
- 6.1 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Description
An issue was discovered in MediaWiki 1.34.x before 1.34.3. On Special:Contributions, the NS filter uses unescaped messages as keys in the option key for an HTMLForm specifier. This is vulnerable to a mild XSS if one of those messages is changed to include raw HTML.
CWEs
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
References
- https://nvd.nist.gov/vuln/detail/CVE-2020-25812 ↗
- https://gerrit.wikimedia.org/g/mediawiki/core/+/ad4a3ba45fb955aa8c0eb3c83809b16b40a498b9/includes/specials/SpecialContributions.php#592 ↗
- https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048480.html ↗
- https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048488.html ↗
- https://github.com/FriendsOfPHP/security-advisories/blob/master/mediawiki/core/CVE-2020-25812.yaml ↗
- https://lists.fedoraproject.org/archives/list/[email protected]/message/RTTPZ7XMDS66I442OLLHXBDNP2LCBJU6 ↗
- https://phabricator.wikimedia.org/T255918 ↗
- https://github.com/advisories/GHSA-rj9p-8jxj-2ch4 ↗